Naslov
Hybrid beam element for stability analysis of semi-rigid frames

Autori
Turkalj, Goran ; Vizentin, Goran ; Brnić, Josip

Vrsta, podvrsta i kategorija rada
Radovi u zbornicima skupova, cjeloviti rad (in extenso), znanstveni

Izvornik
Proceedings of the 5th International Congress of Croatian Society of Mechanics / Matejiček, Franjo - Zagreb : Hrvatsko društvo za mehaniku (HDM), 2006, CD-ROM

Skup
5th International Congress of Croatian Society of Mechanics

Mjesto i datum
Split, Hrvatska; Trogir, Hrvatska, 21.09.2006. - 23.09.2006

Vrsta sudjelovanja
Predavanje

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
stability; semi-rigid connections; semi-rigid frames; hybrid beam element; FEM

Sažetak
Semi-rigid connections and their influence on the elastic buckling load value of frame structures are presented. Equilibrium equations of a buckled beam member are derived applying linearized virtual work principle, St. Venant torsion theory and Euler-Bernoulli flexural theory. Deformations prior buckling are neglected, while material is assumed to be homogeneous, isotropic and linear-elastic. The hybrid S-R (semi-rigid) beam element for modelling of frames containing connections of various rigidity is presented. Elastic and geometric stiffness matrices of the S-R element are derived by a special transformation of the conventional beam element stiffness matrices. Stability analysis is treated as an eigenvalue problem. On the basis of the aforementioned numerical algorithm, the computer program EIGEN-SR is developed. Accuracy of the programme is verified through appropriate examples proving, thus, the modeling of frames as semi-rigid ones is justified.

Izvorni jezik
Engleski

Znanstvena područja
Građevinarstvo, Strojarstvo, Temeljne tehničke znanosti

POVEZANOST RADA